CN214417907U - Telescopic automatic stud welding gun - Google Patents

Abstract

The utility model discloses a telescopic automatic stud welding gun, which comprises a motor, a screw nut, a main shaft, a mounting seat, a mounting rack, a mandril assembly, a connector, a chuck and a nail feeding pipeline, the output shaft of the motor is a screw rod, the screw rod is in threaded connection with a screw rod nut, the screw rod nut is connected with a main shaft, the lower part of the main shaft is inserted in the connector, the chuck is connected with the lower part of the connector or the main shaft, the nail feeding pipeline is connected with the side part of the connector and communicated with the upper space of the chuck, the main shaft is fixedly arranged relative to the mounting seat, the mounting seat is connected with a linear sliding assembly, the linear sliding assembly is connected with the mounting frame, the motor is arranged on the mounting frame, the ejector rod component is connected with the mounting frame and comprises an ejector rod, the ejector rod is movably arranged in the main shaft, and a through hole for the ejector rod to move is vertically formed in the main shaft. The utility model discloses an automatic double-screw bolt welder of telescopic, its structure is ingenious durable, and the facilitate promotion is used.

Description

Telescopic automatic stud welding gun

Technical Field

The utility model relates to a telescopic automatic double-screw bolt welder.

Background

The stud welding gun is a device for welding one end of a stud on the surface of a workpiece, the arc stud welding is a high-speed plant welding method which takes the stud as an electrode, takes welding arc as a heat source, stably burns between the stud and a weldment through the welding arc, and inserts the stud into a molten pool under the pressure of a welding gun after the molten pool is formed by heating the welding area of the weldment and a melting layer is formed at the end part of the stud, thereby forming a joint. Stud welding guns are widely used in high-rise steel structure buildings, industrial factory building, highways, railways, bridges, towers, automobiles, energy sources, traffic facility buildings, airports, stations, power stations, pipeline supports, crane machinery and other steel structure constructions.

Short-period stud welding, also called short-time stud welding, is one of arc-process stud welding. Short cycle stud welding requires less than 100ms to implant a stud than porcelain ring protected arc stud welding and is therefore referred to as short cycle stud welding. The advantage of its application is the field welding of small diameter short studs on thick coated steel sheets.

The inventor of this application discovers at research and development in-process, current short period automatic welder, and its welder structure is complicated, comprises structures such as cylinder, electro-magnet, spring usually, and cylinder piston is made for rubber usually, and the cylinder motion is wayward, and easy wearing and tearing, and can not use under adverse circumstances for a long time, and life is short, and the inconvenient adjustment of spring force, the falling speed of double-screw bolt, highly be difficult to regulate and control.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a telescopic automatic stud welding gun can solve one or more technical problem in the background art at least, is favorable to popularizing and applying.

A telescopic automatic stud welding gun comprises a motor, a lead screw nut, a main shaft, a mounting seat, a mounting frame, a mandril assembly, a connector, a chuck and a nail feeding pipeline, the output shaft of the motor is a screw rod, the screw rod is in threaded connection with a screw rod nut, the screw rod nut is connected with a main shaft, the lower part of the main shaft is inserted in the connector, the chuck is connected with the lower part of the connector or the main shaft, the nail feeding pipeline is connected with the side part of the connector and communicated with the upper space of the chuck, the main shaft is fixedly arranged relative to the mounting seat, the mounting seat is connected with a linear sliding assembly, the linear sliding assembly is connected with the mounting frame, the motor is arranged on the mounting frame, the ejector rod component is connected with the mounting frame and comprises an ejector rod, the ejector rod is movably arranged in the main shaft, and a through hole for the ejector rod to move is vertically formed in the main shaft.

Through adopting the above technical scheme, adopt the lead screw, lead screw nut's cooperation, lead screw nut is connected with the main shaft, make the steady drive of main shaft, and under the uncharged condition, under the effect of spring, lead screw nut can follow lead screw and remove, the main shaft can carry out the concertina movement for the casing, namely the main shaft can be for the casing free movement, the double-screw bolt of adaptable different length, utilize the mount pad to connect linear sliding assembly, but not utilize lead screw nut to go to connect linear sliding assembly, the stability of main shaft removal on the mount pad has been guaranteed, and the main shaft can not rotate, the lead screw nut's of also being convenient for installation, dismantle, overall structure is simple, easy processing, and convenient debugging. The screw inlet pipeline can be used for inputting the stud, the ejector rod and the main shaft can move relatively, the ejector rod can be used for ejecting the stud into the chuck, and automatic feeding and loading of the stud can be skillfully realized without arranging wearing parts such as a cylinder piston and the like.

As a further improvement, the ejector pin subassembly still includes horizontal pole and connecting rod, the main shaft is vertical setting, the horizontal pole is transversely wears to establish in the main shaft, set up the logical groove that supplies the horizontal pole to reciprocate in relevant position on the main shaft, the horizontal pole both ends are direct or indirectly connected in the mounting bracket, the connecting rod is vertical setting, and the connecting rod is connected on the horizontal pole, the upper end coaxial coupling of ejector pin is in the connecting rod. Through adopting above-mentioned technical scheme, the setting of connecting rod is favorable to being connected on the horizontal pole of ejector pin, and the dismouting is convenient, and the connecting rod can guarantee the axiality of ejector pin and main shaft, makes the ejector pin smoothly remove accurately. The ejector rod component replaces a traditional air cylinder, the cross rod can move up and down in the through groove, the ejector rod can move relative to the main shaft, and when the main shaft moves upwards, the ejector rod moves downwards, so that the stud can be pushed into the chuck.

As a further improvement of the utility model, the diameter of the connecting rod is smaller than or adapted to the aperture of the through hole in the main shaft; and the periphery of the ejector rod is sleeved with a bearing, and the bearing is positioned in the through hole of the main shaft. Through adopting above-mentioned technical scheme, the diameter size setting of connecting rod to and the setting of bearing all are favorable to the connecting rod to move smoothly for the main shaft, and then guarantee the axiality of ejector pin and main shaft, are favorable to the ejector pin to remove for the main shaft.

As a further improvement of the utility model, the upper end of main shaft is the screw nut installation department, the through-hole that supplies the lead screw to penetrate is seted up to the upper end of screw nut installation department, installs screw nut in the screw nut installation department, and the through-hole that supplies screw nut to put into is seted up to at least one side of screw nut installation department, and the size adaptation of the side through-hole of screw nut installation department is in screw nut's size. Through adopting above-mentioned technical scheme, screw nut installs conveniently and firm, and can drive the main shaft steadily synchronous motion.

As a further improvement, be provided with insulating cylinder one between mount pad and the main shaft, insulating cylinder one overlaps on the main shaft, and the mount pad cover is on insulating cylinder one, and insulating cylinder two is installed to a lateral wall of mount pad, sets up through-hole one on the lateral wall of insulating cylinder one, and the position of through-hole one is corresponding with the position of the through-hole of insulating cylinder two. Through adopting above-mentioned technical scheme, the reliable connection between main shaft and the mount pad has been guaranteed to insulating cylinder one, insulating cylinder two, also can guarantee the insulation between the two simultaneously.

As a further improvement, the mounting bracket includes mounting panel, side-mounting panel and lower mounting panel, it is located same one side of side-mounting panel with lower mounting panel to go up the mounting panel, the motor is installed on last mounting panel, and linear sliding assembly installs on the side-mounting panel, the ejector pin subassembly is connected in lower mounting panel. Through adopting above-mentioned technical scheme, the mounting bracket has concrete structure to set up, is favorable to the compact installation of each part.

As a further improvement, the spindle sleeve is provided with a spring, one end of the spring is abutted against the mounting frame or the horizontal rod, and the other end of the spring is abutted against the spindle or the connector. The abutment in this application may be a direct abutment or an indirect abutment. Through adopting above-mentioned technical scheme, the setting of spring is favorable to the ejector pin to reset for the main shaft and remove.

As a further improvement of the present invention, the mounting frame is detachably or integrally provided with a casing, and the lead screw, the lead screw nut, the upper portion of the main shaft and the linear sliding assembly are all located in the casing; a clamping table is arranged in the clamping head; mounting bracket or casing are connected with arm link or handle, when mounting bracket or casing connect the handle, mounting bracket or casing still are connected with the guide bar mount, wear to establish the guide bar in the guide bar mount, and the guide bar lower extreme is connected with the guide bar fixing base, sets up the through-hole that supplies the chuck to penetrate on the guide bar fixing base, and guide bar fixing base sub-unit connection has a protection section of thick bamboo. By adopting the technical scheme, the machine shell can protect the internal devices of the machine shell, the moving smoothness of the moving parts is ensured, and the clamping table can be used for positioning the stud to prevent the stud from returning. The automatic stud welding gun can be semi-automatic, full-automatic and the like.

As a further improvement, the linear sliding assembly comprises a sliding block and a sliding rail, the sliding block is movably arranged on the sliding rail, the sliding block is connected with the mounting seat, and the sliding rail is connected with the mounting rack. The mounting bracket can be connected in the arm link, can set up the elastic component between mounting bracket and the arm link for play the cushioning effect when welding. Through adopting above-mentioned technical scheme, the setting of slider and slide rail, it is simple ingenious, and both installations are convenient, and it is smooth and easy to slide.

As a further improvement, an insulating cylinder III is arranged between the cross rod and the mounting rack, and the screw nut is an insulating part. Through adopting above-mentioned technical scheme, insulating cylinder three and screw nut's material can be used to insulating.

Compared with the prior art, the utility model discloses the beneficial effect who possesses has at least: under the outage condition, the main shaft can freely be adjusted for the lead screw, applicable different extension length's double-screw bolt, under the circular telegram condition, to the promotion highly uniform of the double-screw bolt of different length, guaranteed welding quality and efficiency, and need not complicated structures such as cylinder, electro-magnet, overall structure is compact, and is ingenious, and processing is convenient, life extension. The screw inlet pipeline can be used for inputting the stud, the ejector rod and the main shaft can move relatively, the ejector rod can be used for ejecting the stud into the chuck, and automatic feeding and loading of the stud can be skillfully realized without arranging wearing parts such as a cylinder piston and the like.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural view of a telescopic automatic stud welding gun complete equipment related in the present invention;

fig. 2 is a schematic structural diagram of a telescopic automatic stud welding gun according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an explosion structure of the telescopic automatic stud welding gun according to an embodiment of the present invention;

FIG. 4 is a schematic view of a portion of the telescoping automatic stud welding gun of FIG. 3;

fig. 5 is a schematic diagram of another exploded structure of the telescopic automatic stud welding gun according to an embodiment of the present invention;

FIG. 6 is a schematic view of a portion of the telescoping automatic stud welding gun of FIG. 5;

fig. 7 is a schematic cross-sectional view of an automatic retractable stud welding gun according to an embodiment of the present invention;

FIG. 8 is a schematic view of a portion of the telescoping automatic stud welding gun of FIG. 7;

fig. 9 is a schematic structural view of a telescopic automatic stud welding gun according to embodiment 2 of the present invention;

fig. 10 is an exploded schematic view of the telescopic automatic stud welding gun according to embodiment 2 of the present invention;

fig. 11 is another schematic diagram of an explosion structure of the telescopic automatic stud welding gun according to embodiment 2 of the present invention;

fig. 12 is another schematic diagram of an explosion structure of the telescopic automatic stud welding gun according to embodiment 2 of the present invention;

fig. 13 is a schematic sectional structure view of an automatic telescopic stud welding gun according to embodiment 2 of the present invention.

In the figure: the device comprises a machine shell 1, a first insulating cylinder 2, a mounting seat 3, a main shaft 4, a top rod 5, a connector 6, a chuck 7, a stud 8, a nail feeding pipeline 9, a cross rod 10, a sliding block 11, a sliding rail 12, a lead screw nut 13, a side mounting plate 14, a motor 15, an upper mounting plate 16, a lower mounting plate 17, a connecting rod 18, a bearing 19, a third insulating cylinder 20, a first through hole 22, a cable connecting frame 23, a spring 24, an insulating seat 25, a guide rod fixing frame 26, a guide rod 27, a guide rod fixing seat 28, a protective cylinder 29, a handle 30, a second insulating cylinder 31, a lead screw nut mounting part 41, a telescopic automatic stud welding gun 100, a first through hole 101, a lead screw 151, a mechanical arm 200, a rack 300 and a control console 400.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following buckling drawings and preferred embodiments are described in detail below with reference to the following detailed description of the embodiments, structures, features and effects of the present invention.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and are not to be considered limiting of the application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

Referring to fig. 1, the complete telescopic automatic stud welding machine comprises a telescopic automatic stud welding machine 100, a mechanical arm 200, a frame 300 and a control console 400, wherein the telescopic automatic stud welding machine 100 is connected to the mechanical arm 200, the mechanical arm 200 is installed on the frame 300, and the control console 400 is installed on the frame.

Referring to fig. 2 to 8, a telescopic automatic stud welding gun 100 for welding a stud 8 on a weldment comprises a motor 15, a lead screw nut 13, a spindle 4, a mounting base 3, a mounting bracket, a mandril assembly, a connector 6, a collet 7 and a nail feeding pipeline 9, wherein an output shaft of the motor 15 is a lead screw 151, the lead screw 151 is in threaded connection with the lead screw nut 13, the lead screw nut 13 is connected with the spindle 4, the lower part of the spindle 4 is inserted into the connector 6, the collet 7 is connected with the connector 6 or the lower part of the spindle 4, the nail feeding pipeline 9 is connected with the side part of the connector 6 and communicated with the space above the collet 7, the spindle 4 is fixedly arranged relative to the mounting base 3, the mounting base 3 is connected with a linear sliding assembly, the linear sliding assembly is connected with the mounting bracket, the motor 15 is mounted on the mounting bracket, the mandril assembly is connected to the mounting bracket, the mandril assembly comprises a mandril 5, and the mandril 5 is movably arranged in the spindle 4, a through hole for the ejector rod 5 to move is vertically arranged in the main shaft 4. The spindle 4 is made of a metal conductive material. The length of the lead screw 151 can be set according to the length of a welding nail, the lead screw can be long or short, the lead screw can be as long as 150mm, the longer lead screw can eject the welding nail with the length of 100mm, the lead of the lead screw 151 can be 10mm or more (preferably 12mm-25mm), under the condition of power failure, under the action of the spring 24, the main shaft 4 is reset, the main shaft extends out, the ejector rod 5 is arranged on the upper portion of the main shaft, the nail inlet pipeline 9 blows nails to the space above the chuck 7, the motor rotates, the main shaft 4 is lifted upwards, the position of the ejector rod 5 is fixed, the stud 8 (welding nail) is ejected to the clamping position of the chuck, the motor is immediately reversed (or the motor is disconnected, the spring can also reset the main shaft), the welding gun is reset, the mechanical arm moves to the position to be welded, the welding gun motor is lifted according to the lifting height of the main shaft, and the welding nail is welded. The studs with different lengths are lifted to the same height, so that the welding quality is ensured, and the application range of the welding gun is widened. The screw feeding pipeline 9 can be used for inputting the stud 8, the main shaft 4 and the ejector rod 5 can move relatively, when the main shaft 4 ascends, the ejector rod 5 is not moved, the chuck 7 ascends along with the main shaft 4, the ejector rod 5 can be used for ejecting the stud 8 into a clamping position on the chuck 7, and automatic feeding and installation of the stud can be skillfully realized without arranging wearing parts such as a cylinder piston and the like. The motors of the present application include, but are not limited to, stepper motors, servo motors, and the like. The retractable automatic stud welding gun of the present application includes, but is not limited to, short cycle automatic stud welding guns, long cycle automatic stud welding guns, and the like.

The main shaft 4 is connected with a cable connecting frame 23 for connecting a cable.

Referring to fig. 2 to 8, the ejector rod assembly further includes a cross rod 10 and a connecting rod 18, the main shaft 4 is vertically arranged, the cross rod 10 transversely penetrates through the main shaft 4, a through groove 42 for the cross rod 10 to move up and down is formed in the corresponding position of the main shaft 4, two ends of the cross rod 10 are directly or indirectly connected to the mounting frame, the connecting rod 18 is vertically arranged, the connecting rod 18 is connected to the cross rod 10, and the upper end of the ejector rod 5 is coaxially connected to the connecting rod 18.

The diameter of the connecting rod 18 is smaller than or matched with the aperture of the through hole in the main shaft 4; the periphery of the mandril 5 is sleeved with a bearing 19, and the bearing 19 is positioned in the through hole of the main shaft 4. The size of the connecting rod 18 and the arrangement of the bearing 19 are favorable for ensuring the coaxiality of the mandril 5 and the main shaft 4 and improving the smooth degree and the stability of the relative movement of the mandril 5 and the main shaft 4.

Referring to fig. 2 to 6, the upper end of the spindle 4 is a lead screw nut mounting portion 41, a through hole for the lead screw 151 to penetrate through is formed in the upper end of the lead screw nut mounting portion 41, the lead screw nut 13 is mounted in the lead screw nut mounting portion 41, a through hole for the lead screw nut 13 to be placed in is formed in at least one side surface of the lead screw nut mounting portion 41, and the size of the through hole in the side surface of the lead screw nut mounting portion 41 is adapted to the size of the lead screw nut 13. The upper part of the screw nut 13 is of an oblong flat block structure, the lower part of the screw nut is of a cylindrical structure, and the width of the oblong flat block is matched with the size of a side through hole of the screw nut mounting part 41.

Referring to fig. 2, 4, 5 and 6, a first insulating cylinder 2 is arranged between the mounting base 3 and the main shaft 4, the first insulating cylinder 2 is sleeved on the main shaft 4, the mounting base 3 is sleeved on the first insulating cylinder 2, a second insulating cylinder 31 is installed on one side wall of the mounting base 3, a first through hole 22 is formed in the side wall of the first insulating cylinder 2, and the position of the first through hole 22 corresponds to the position of the through hole of the second insulating cylinder 31. The main shaft 4 may be provided with a fixing hole, and a fastening member is screwed into the fixing hole from the through hole of the second insulating cylinder 31 to fix the mounting seat and the main shaft 4. The upper end of the first insulating cylinder 2 is provided with an outward protruding flange part, and the upper side wall of the mounting seat 3 can abut against the lower side surface of the flange part. The number of the components formed by the mounting base 3 and the first insulating cylinder 2 can be multiple, so that the main shaft is firmly fixed, and the main shaft can stably move relative to the mounting frame conveniently.

Referring to fig. 2 and 3, the mounting bracket includes an upper mounting plate 16, a side mounting plate 14, and a lower mounting plate 17, the upper mounting plate 16 and the lower mounting plate 17 are located on the same side of the side mounting plate 14, the motor 15 is mounted on the upper mounting plate 16, the linear sliding assembly is mounted on the side mounting plate 14, and the push rod assembly is connected to the lower mounting plate 17.

The spindle 4 is sleeved with a spring 24, one end of the spring 24 abuts against the mounting rack or the cross bar 10, and the other end of the spring 24 abuts against the spindle 4 or the connecting head 6. Here, the abutment may be indirect abutment or direct abutment.

Referring to fig. 2, the mounting frame is provided with a housing 1, and the lead screw 151, the lead screw nut 13, the upper portion of the main shaft 4 and the linear sliding assembly are all located in the housing 1.

Referring to fig. 3 and 4, the linear sliding assembly comprises a sliding block 11 and a sliding rail 12, the sliding block 11 is movably arranged on the sliding rail 12, the sliding block 11 is connected with the mounting base 3, the sliding rail 12 is connected with the mounting frame, the mounting frame can be connected with the mechanical arm connecting frame, an elastic piece can be arranged between the mounting frame and the mechanical arm connecting frame and used for playing a role in buffering during welding, and the mechanical arm connecting frame is used for connecting a mechanical arm.

And a third insulating cylinder 20 is arranged between the cross bar 10 and the mounting rack, and the screw nut 13 is an insulating part.

When the device is used, the screw nut 13 is at a low position on the screw 141, the spindle 4 is at a low position, the stud 8 passes through a space above the chuck 7 of the nail feeding pipeline 9, the screw 151 rotates to drive the screw nut 13 to move upwards, so that the spindle 4 is driven to move upwards, the ejector rod 5 moves downwards relative to the spindle 4, and the stud 8 is ejected into the chuck 7 by the ejector rod 5, so that the stud 8 is exposed out of the chuck 7. A clamping table 71 is arranged in the chuck 7 to prevent the stud (welding nail) from returning, the welding nail is clamped at a fixed position in the chuck, and other limiting mechanisms can be arranged to prevent the stud from returning. The lead screw 151 is reversely rotated (or the motor is disconnected for enabling, and the main shaft 4 can also be descended to a reset state under the action of the spring), the main shaft 4 descends, the ejector rod 5 ascends, the main shaft 4 drives the chuck 7 to descend, after the reset, the stud 8 on the chuck 7 is contacted with a weldment, the motor has no enabling, the lead screw nut can flexibly descend because the lead of the lead screw is 10mm or more (preferably 12mm-25mm), at the moment, the mechanical arm continuously descends to the extension length of the welding nail, the short circuit state is formed, and the stud 8 and the surface of the weldment are in a vertical state; then the stud/welding part is connected with a small current, after a few milliseconds, under the action of lifting controlled by a motor, the main shaft 4/the chuck 7 is lifted, the stud 8 is lifted, the lifting height is controlled by a main control board, sparks are formed, and pilot arcs are generated; after the pilot arc lasts for a certain time, the main power supply is automatically started, a large-current arc (welding arc) is automatically initiated, the end part of the stud and the surface of a weldment are melted, the stud 8 starts to fall after a preset given time, the spindle 4/the chuck 7 drives the stud 8 to be inserted into a molten pool under the action of an elastic part (spring) on the periphery of the spindle and the motor control rotating speed (the slower the motor rotating speed is, the buffering effect is realized during falling), the current is stopped after time delay, the welding is finished, and the mechanical arm is lifted upwards to repeat the welding process at another position.

Example 2

Referring to fig. 9 to 13, different from embodiment 1, the telescopic automatic stud welding gun of the present embodiment is characterized in that a handle 30 is connected to the housing 1, the housing 1 is further connected to a guide bar fixing frame 26, the guide bar fixing frame 26 is connected to the lower mounting plate 17, a guide bar 27 is inserted into the guide bar fixing frame 26, a guide bar fixing seat 28 is connected to the lower end of the guide bar 27, a through hole for the chuck 7 to penetrate is formed in the guide bar fixing seat 28, and a protection cylinder 29 is connected to the lower portion of the guide bar fixing seat 28. The side wall of the casing 1 is provided with a first through hole 101 at a position connected with the handle, and the first through hole can be used for the penetration of a cable.

A spring 24 is sleeved outside the main shaft 4, one end of the spring 24 indirectly abuts against the casing 1 or the cross bar 10, specifically, one end of the spring abuts against an insulating seat 25, the upper part of the insulating seat 25 is of a cylindrical structure, and the cylindrical structure is connected to the lower mounting plate 17; the other end of the spring 24 abuts against the spindle 4 or the connecting head 6. Here, the abutment may be indirect abutment or direct abutment. Other structures and principles may be the same as those of embodiment 1, and are not described again.

The telescopic automatic stud welding gun of the embodiment can automatically convey welding nails (studs) at the same time, when the telescopic automatic stud welding gun is used, an operator holds the handle 30, the studs pass through the space above the chuck 7 of the nail feeding pipeline 9, the screw rod 151 rotates to drive the screw rod nut 13 to move upwards, so that the main shaft 4 is driven to move upwards, the ejector rod 5 moves downwards relative to the main shaft 4, and the ejector rod 5 pushes the studs into the chuck 7 so that the studs are exposed out of the chuck 7. A clamping table is arranged in the chuck 7 to prevent the stud (welding nail) from moving back relative to the main shaft, the welding nail is clamped at a fixed position in the chuck, and other limiting mechanisms can be arranged to prevent the stud from moving back. During welding, the protective cylinder 29 is abutted against the surface of a weldment, the stud protruding out of the lower surface of the protective cylinder 29 can be jacked upwards, and the main shaft can be lifted, so that the lower surface of the stud can be flush with the lower surface of the protective cylinder 29, the stud and the weldment are in a short circuit state at the moment, and the stud and the surface of the weldment are in a vertical state; then, a starting switch on the handle 30 is pressed, the stud/welding part is connected with a small current, and after a few milliseconds, the stud is lifted by the main shaft to generate a pilot arc; after the pilot arc continues for a certain time, the main power supply is automatically started, the large-current arc (welding arc) is automatically initiated, the end part of the stud and the surface of a weldment are melted, the stud begins to fall down after a preset given time, the stud is driven by the main shaft to be inserted into a molten pool under the action of the spring, the current is cut off after time delay, and the welding is finished to form a joint.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments that do not depart from the technical scope of the present invention are within the scope of the present invention.

Claims (10)

1. The telescopic automatic stud welding gun is characterized by comprising a motor (15), a lead screw nut (13), a main shaft (4), a mounting seat (3), a mounting frame, a mandril assembly, a connector (6), a chuck (7) and a nail feeding pipeline (9), wherein an output shaft of the motor (15) is a lead screw (151), the lead screw (151) is in threaded connection with the lead screw nut (13), the lead screw nut (13) is connected with the main shaft (4), the lower part of the main shaft (4) is inserted into the connector (6), the chuck (7) is connected with the lower part of the connector (6) or the main shaft (4), the nail feeding pipeline (9) is connected with the side part of the connector (6) and communicated to the space above the chuck (7), the main shaft (4) is fixedly arranged relative to the mounting seat (3), the mounting seat (3) is connected with a linear sliding assembly, the linear sliding assembly is connected with the mounting frame, motor (15) are installed on the mounting bracket, the ejector pin subassembly is connected in the mounting bracket, the ejector pin subassembly includes ejector pin (5), ejector pin (5) activity sets up in main shaft (4), be the through-hole that supplies ejector pin (5) activity in main shaft (4) vertically seted up.

2. The telescopic automatic stud welding gun according to claim 1, characterized in that the ejector rod assembly further comprises a cross rod (10) and a connecting rod (18), the main shaft (4) is vertically arranged, the cross rod (10) transversely penetrates through the main shaft (4), a through groove (42) for the up-and-down movement of the cross rod (10) is formed in the corresponding position of the main shaft (4), two ends of the cross rod (10) are directly or indirectly connected to a mounting frame, the connecting rod (18) is vertically arranged, the connecting rod (18) is connected to the cross rod (10), and the upper end of the ejector rod (5) is coaxially connected to the connecting rod (18).

3. The telescopic automatic stud welding gun according to claim 2, characterized in that the diameter of the connecting rod (18) is smaller than or adapted to the bore diameter of the through hole in the spindle (4); and a bearing (19) is sleeved on the periphery of the ejector rod (5), and the bearing (19) is positioned in the through hole of the main shaft (4).

4. The telescopic automatic stud welding gun according to claim 1, 2 or 3, characterized in that the upper end of the spindle (4) is a lead screw nut mounting portion (41), a through hole for a lead screw (151) to penetrate is formed in the upper end of the lead screw nut mounting portion (41), a lead screw nut (13) is mounted in the lead screw nut mounting portion (41), a through hole for the lead screw nut (13) to be placed in is formed in at least one side surface of the lead screw nut mounting portion (41), and the size of the through hole in the side surface of the lead screw nut mounting portion (41) is adapted to the size of the lead screw nut (13).

5. The telescopic automatic stud welding gun according to claim 1, 2 or 3, characterized in that a first insulating cylinder (2) is arranged between the mounting seat (3) and the main shaft (4), the first insulating cylinder (2) is sleeved on the main shaft (4), the mounting seat (3) is sleeved on the first insulating cylinder (2), a second insulating cylinder (31) is arranged on one side wall of the mounting seat (3), a first through hole (22) is formed in the side wall of the first insulating cylinder (2), and the position of the first through hole (22) corresponds to the position of the through hole of the second insulating cylinder (31).

6. The telescopic automatic stud welding gun according to claim 1, 2 or 3, characterized in that the mounting bracket comprises an upper mounting plate (16), a side mounting plate (14) and a lower mounting plate (17), the upper mounting plate (16) and the lower mounting plate (17) are located on the same side of the side mounting plate (14), the motor (15) is mounted on the upper mounting plate (16), the linear slide assembly is mounted on the side mounting plate (14), and the ram assembly is connected to the lower mounting plate (17).

7. The telescopic automatic stud welding gun according to claim 2 or 3, characterized in that a spring (24) is sleeved outside the main shaft (4), one end of the spring (24) abuts against the mounting frame or the cross bar (10), and the other end of the spring (24) abuts against the main shaft (4) or the connector (6).

8. The telescopic automatic stud welding gun according to claim 1, 2 or 3, characterized in that a housing (1) is detachably or integrally provided on the mounting frame, and the lead screw (151), the lead screw nut (13), the upper part of the main shaft (4) and the linear sliding assembly are all located in the housing (1); a clamping table (71) is arranged in the clamping head (7); mounting bracket or casing are connected with arm link or handle (30), when handle (30) are connected to mounting bracket or casing, mounting bracket or casing still are connected with guide bar mount (26), wear to establish guide bar (27) in guide bar mount (26), and guide bar (27) lower extreme is connected with guide bar fixing base (28), sets up the through-hole that supplies chuck (7) to penetrate on guide bar fixing base (28), and guide bar fixing base (28) sub-unit connection has a protection section of thick bamboo (29).

9. The telescopic automatic stud welding gun according to claim 1, 2 or 3, characterized in that the linear sliding assembly comprises a sliding block (11) and a sliding rail (12), the sliding block (11) is movably arranged on the sliding rail (12), the sliding block (11) is connected with the mounting base (3), and the sliding rail (12) is connected with the mounting frame.

10. The telescopic automatic stud welding gun according to claim 2 or 3, characterized in that an insulating cylinder III (20) is arranged between the cross bar (10) and the mounting frame, and the lead screw nut (13) is an insulating piece.

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